Eee! Thanks greatly! I do have a bit more on Trebuchet that's come to me recently. I realized he's a little thin as is on explicit hooks, and motivation...so I fixed it!
Goals: Trebuchet has become increasingly interested in the now-forgotten culture that created him, in search of a more stable identity. By proxy, he's also started pursuing interests in other ancient cultures, as well as other constructs. As being a warmage is literally built into his body, it's unlikely he'll be multiclassing as an artificer, but he will undoubtedly have many questions for any artificers he meets.

Thus, any mention of unusual constructs, or ruins/sources of knowledge about ancient times and places, will interest Trebuchet...just as those seeking to despoil such places and things will raise his ire.
Background Addenda: As the Kingdom of Knowledge has not been officially at war in some time, Trebuchet's main role in Taala's court was dual. He sometimes served as a sort of arcane bodyguard for important personages. Being unusually durable for a mage, almost impossible to distract or offend, and possessed of extraordinary firepower, he was well suited for such work. He also worked in conjunction with the staffers of the
Antiquities Arcanum, a small and exclusive guild of historians and sages who, under the direct blessing of Taala, strived to unlock long lost secrets and magicks from the bones of bygone ages long since built over. It was here that Trebuchet gained his interest in his erstwhile creators and their kin, while affably allowing bearded men to peer up and down his mithril hide and sketch the runes and patterns inlaid thereon.
He served Taala out of expediency, and because he hoped to learn more of his past by cooperating with the researches upon him.
Suggestion for item: Perhaps something that's warforged only? A docent, or other warforged component? It could have been some mysterious artifact that the sages thought was broken, because they couldn't make it work even after they identified what it did. Then one day, some undergrad intern realized it looked a lot like a slot on Trebuchet's chestplate...
Just a thought.
